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ADDENDUM NO. 3

TO THE BID DOCUMENTS

Tasmania Court Sewer Main Extension

CITY OF HOMER, ALASKA

Addendum Issue Date: November 19, 2021

Bid Submittal Date: November 30, 2021______________

Previous Addenda Issued: 2

Issued By: Janette Keiser, PE Public Works Director City of Homer

Notice to Bidders: Bidders must acknowledge receipt of this Addendum by including the Addenda Acknowledgement Form with the bid. Bidders are required to acknowledge each addenda separately on the Addenda Acknowledgement Form. Any bids received without acknowledgment of addenda may be rejected prior to evaluation.

The Bid Documents for the above project are amended as follows (all other terms and conditions remain unchanged):

1. On the Bid Form, all expenses for mobilization/demobilization, SWPPP implementation and traffic control have been moved to Scope A of the project.

2. Addendum #2 should be disregarded.

3. Addenda Acknowledgment Form is attached.

4. New Special Provisions are attached with language regarding invasive plant control. 5. Questions from Bidders.

Question #1: Do you know what type of material the septic tanks are made of and size? Answer #1: Attached to this addendum are septic tank filings from ADEC records which show the size and material of the septic tanks to be replaced. The ADEC records did not

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contain any filings for parcel # 17702040 however, it should be assumed that the septic tank for that property is steel unless otherwise notified. We do not know the size of the septic tank on parcel # 17702040 Question #2: DEC allows for septic demolition in place. Pumping, Removal of top, fill with some Lyme and clean gravel and grade over. Is demolition in place acceptable? Answer #2: Yes, demolition in place is acceptable for this project.

ADDENDA ACKNOWLEDGMENT

Project Name: Tasmania Court Water Main Extension Project I hereby acknowledge addenda numbers:

Name of Firm: Signature of Bidder: Date: This Acknowledgement must be included in the Bid/Proposal for the project if any Addenda are issued or the Bid/Proposal could be considered non-responsive.

BID FORM - 1

CONSOLIDATED BID FORM

Tasmania Court Water & Sewer Main Extension

Scope A: Tasmania Ct. Water Main Extension. All of the following Bid Items are for the construction of the WATER MAIN & appurtenances.

ITEM NO.

SPEC NO.

BID ITEM DESCRIPTION –

Water Main & Appurtenances

UNIT QUANTITY

UNIT BID

PRICE

TOTAL BID PRICE

1 101 Mobilization/Demobilization (entire project)

LS 1

2 602 Install 8” HDPE SDR11 Water Pipe LF 940 3 603 Furnish & Install 8” Gate Valve EA 3 4 604 Furnish & Install Single Pumper Hydrant EA 3 5 606 Furnish & Install 1” Water Service

Connection EA 11

6 207 Excavate & Backfill Structural Trench Section for water line

LF 593

7 207 Excavate & Backfill Non-Structural Trench Section for water line

LF 752

8 102 Construction Survey (entire project) LS 1

9 221 SWPPP Implementation (entire project)

LS 1

10 103 Traffic Control (entire project) LS 1

11 702 Furnish & Install Geotextile Fabric SY 600

12 602 Furnish and install 12” HDPE SDR11 Water Pipe

LF 562

13 603 Furnish and install 12” Gate Valve EA 1

14 503 Furnish and Install ARV Manhole EA 1

15 603 Furnish and Install 2” ARV Assembly EA 1

Total Bid for Scope A - Water Main: $____________

BID FORM - 2

Scope B-1: Tasmania Ct. Sanitary Sewer Main Extension All of the following Bid Items are for the construction of the SEWER MAIN & appurtenances, but not including the installation of the E-One Grinder Pumps.

ITEM NO.

SPEC NO.

BID ITEM DESCRIPTION – Sewer Main & Appurtenances

UNIT QUANTITY

UNIT BID

PRICE

TOTAL BID PRICE

1 502 Furnish & Install 8”DIP Class 50 Sewer Pipe LF 1276 2 518 Furnish & Install 16” HDPE SDR11 Casing LF 49 3 503 Furnish & Install Sewer Manhole EA 2 4 508 Furnish & Install Cleanout EA 3 5 510

Furnish & Install Sanitary Sewer Service Stub-out

EA 9

6 518 Furnish & Install Pressurized Sewer Service Stub-out

EA 2

7 207 Excavate & Backfill Structural Trench Section

LF 869

8 207 Excavate & Backfill Non-Structural Trench Section

LF 723

9 704 Furnish & Install 2” Thick Insulation BOARD FOOT

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Total Bid for Scope B-1 – Sewer Main: $____________

BID FORM - 3

Scope B-2: Tasmania Ct. Sewer Main E-One Service Connections All of the following Bid Items are for the construction of the E-One Grinder Pumps on private property.

ITEM NO.

SPEC NO.

BID ITEM DESCRIPTION UNIT QUANTITY

UNIT BID

PRICE

TOTAL BID PRICE

1 712 Furnish & Install E-One DH071 Grinder Pump

EA 2

2 502 Furnish & Install 1.25” HDPE SDR11 sewer service pipe

LF 300

3 220 Excavate & Backfill Asphalt Pavement Trench Section

LF 20

4 207 Excavate & Backfill Non-Structural Trench Section

LF 280

5 516 Remove & Dispose of Existing Septic Tank EA 7

Total Scope B-2 – E-1 Grinder Pumps on Private Property: $____________

Consolidated Bid Amount – All Bid Items (Scope A + Scope B-1 + Scope B-2) : $____________

Note: Basis of bid will be the Consolidated Bid Amount.

Name of Bidding Company___________________________________________________

Address of Bidding Company_________________________________________________

Signature of Company Representative ___________________________ Date __________

Printed Name of Company Representative______________________________________

Phone#/Email_____________________________________________________________

SPECIAL PROVISIONS

Tasmania Court Sewer Main Extension The construction contract for this project will be administered in accordance with the General Provisions of the City’s Standard Construction Specifications (2011). MODIFICATIONS TO GENERAL PROVISIONS

SP - 1: Section 10.02 - Add New Article 2.6 – Anti-Discrimination The contractor shall not discriminate on the basis of race, color, national origin or sex in the performance of this contract. The contractor shall carry out applicable requirements of 40 CFR part 33 in the award and administration of contracts awarded under EPA financial assistance agreements. Failure by the contractor to carry out these requirements is a material breach of this contract which may result in the termination of this contract or other legally available remedies. SP - 2: Section 10.04 – Add New Article 4.6 – Scope of Work The Work included under this Contract consists of furnishing all labor, materials, equipment, supervision, and other facilities necessary to successfully complete the Work set forth in the drawings, specifications, and the terms of the Contract, including, but not limited to the following work:

• Excavation required to bury a new sewer main at the depth specified in the plans, including exposing an existing sewer main connection so that the new sewer main can be connected to it.

• Installation of 1276 feet of 8-inch DIP Class 50 sewer pipe. • Installation of sewer service connections to 11 parcels, including 2 parcel connected

through E-Ones Grinder Pumps. • Installation of 2 manholes. • Decommission 7 existing septic tanks. • Excavation and backfill of structural and non-structural trench sections. • All materials will be provided by the Contractor. • Work required by the SWPPP • Traffic control

SP – 3 Article 5.12 – Temporary Erosion Control During Construction Add the following language:

“The City has prepared a Storm Water Pollution Prevention Plan (SWPPP), which will be included in an Addenda. The Contractor is required to implement the Best Management Practices in the SWPPP and otherwise comply with the terms of the SWPPP. Compensation will be paid under Bid Item #12 of Scope B-1, SWPPP Implementation.” SP - 4: Article 5.19 – Easement and Rights-of-way Add the following language: “The Contractor will be provided access to a laydown area for material storage, job shack, and other uses. The location of this area will be shown in the site map.” SP - 5: Article 5.25 - Unusual Work Hours Add the following sentence: “The noise level from work completed before 8:00 AM and after 8:00 PM cannot exceed 75 db at a distance of 50 feet.” MODIFICATIONS TO STANDARD SPECIFICATIONS DIVISION 100 GENERAL DIVISION SECTION 102 CONSTRUCTION SURVEYING BY THE CONTRACTOR SP – 7: 102.1 General Add the following paragraph: “The Contractor shall submit all survey data with each pay application; Field Books with sketches, professionally scaled plan set redlines and electronic survey coordinates. These items shall be submitted in entirety within 10 days of the project completion. In addition, the as-built information shall also be in NAD 83 datum, the City of Homer will provide the coordinate system at the time of contract award. All files submitted must be in PDF format.” DIVISION 200 EARTHWORK SECTION 208 COMPACTION CONTROL BY THE CONTRACTOR SP – 8: Delete all text within section 208 and replace with: “The City will provide field compaction testing for quality control.”

SP- 9: New Section 220 – Excavate and Backfill Asphalt Pavement Trench Section 220.1 General The work under this section consists of performance of all operations pertaining to the trench excavation and backfill within areas containing asphalt concrete pavement in accordance with the limits shown on the drawings and as directed by the Engineer. 220.2 Construction The contractor shall excavate trenches within areas containing asphalt concrete pavement per HSCS Section 207. Bedding material shall be Class “C” per HSCS Section 211 and backfilled in conformance with HSCS Section 207. Classified Fill Type III and Leveling Course shall be installed in conformance with HSCS Sections 205 and 206, respectively. Asphalt Concrete shall be installed in conformance with HSCS Division 400. 220.3 Method of Measurement Excavate and Backfill Asphalt Pavement Trench Section shall be measured by the lineal foot (LF) with the dimensions shown on the drawings and these specifications. Payment for Excavate and Backfill Asphalt Pavement Trench Section includes all labor, materials, and incidentals for excavating, backfilling, and placing asphalt concrete surfacing. 220.4 Basis of Payment Payment shall be made under the following unit:

ITEM DESCRIPTION UNIT 220 Excavate and Backfill Asphalt Pavement Trench Section LF SP- 10: New Section 221 – SWPPP Implementation 221.1 General Work under this section consists of all activities related to implementing the requirements of the SWPPP for this project. 221.2 Construction The contractor shall adhere to all terms and conditions and shall implement all BMPs as stated in the SWPPP.

221.3 Method of Measurement SWPPP Implementation shall be measured by lump sum. 221.4 Basis of Payment Payment shall be made under the following unit:

ITEM DESCRIPTION UNIT 221 SWPPP Implementation LS SP – 11: Add New Section 222, Invasive Weed Control All mineral materials, topsoil, and straw or hay erosion control products shall be certified as weed free under the state of Alaska’s Division of Agriculture weed free certification program. All questions regarding the weed free certification program should be directed to the Homer Water and Soil Conservation District. They may be reached at (907) 205-0235. DIVISION 500 SEWER SYSTEMS SP-12: Add New Section 515 Connection to Existing Sewer Main 515.1 General There is an exsiting 8” sewer main running along the south side of South Slope Drive. The new 8” sewer main will be connected to this existing one. This item consists of furnishing all labor, equipment and materials necessary to expose the existing sewer main stub out, modify the end of the stub out as required and connect the new sewer main to the stub out. 515.2 Construction

A. Rinse all pipe, fittings, and couplings to be used in the connection with a 5% solution of sodium hypochlorite or calcium hypochlorite immediately prior to installation.

B. Leave the entire reconnection assembly exposed to view until sewage is flowing through the connection and all joints have been examined for leaks.

SP-13: New Section 516 – Decommission Existing Septic Tanks and Biocycle Units 516.1 General The work under this section consists of performance of all operations pertaining to the removal, disposal, backfilling, and replacement and repair of landscaping as required to

decommission existing septic tanks and biocycle units on properties connecting to the City of Homer sanitary sewer system shown on the drawings and as directed by the Engineer. The following table itemizes the location and type of septic tank to be decommissioned a spart of gravity sanitary sewer connection to the new sanitary sewer main:

Address Tank Size and Material Location Relative to Existing Cleanout Connection to New Service

786 W. Tasmania Court 1250 gallon, steel 10 feet +/- south of cleanout connection 814 W. Tasmania Court 1250 gallon, steel 20 feet +/- south of cleanout connection 825 W. Tasmania Court 1250 gallon, steel 30 feet +/- southwest of cleanout 842 W. Tasmania Court 1250 gallon, steel 30 feet +/- south of cleanout connection 4526 South Slope Drive 1000 gallon, steel 20 feet +/- south of cleanout connection

The following table itemizes the location and type of septic tank to be decommissioned and replaced with a pressurized sewer service connection:

Address Tank Size and Material Location Relative to Cleanout Connection to New Service

795 W. Tasmania Court 1250 gallon, steel & 1500 gallon, steel (Biocycle Unit)

6 feet +/- and 40 feet +/- west of cleanout connection

907 E. Tasmania Court 1500 gallon, steel 10 feet +/- south of cleanout connection 516.2 Construction The contractor shall remove the wastewater from all compartments and dispose of wastewater per Alaska Department of Environmental Conservation (ADEC) regulations at an approved ADEC disposal site. The septic tanks and biocycle units shall be removed and disposed of per ADEC regulations at an approved disposal site. The resulting void after removal of the tanks and biocycle units shall be backfilled with Classified Fill Type IV, or material approved by the Engineer, per HSCS Section 205. The fill shall be compacted to 90% maximum relative density per HSCS Section 208 for every 10 cubic yards of fill placed. The final grade of the fill shall match the slope and grade of the surrounding existing ground but shall not allow surface water to be retained within the surface limits of the fill.

The surface shall be seeded with a lawn grass seed mix commercially available in South Central Alaska per the manufacturer’s recommendations. 516.3 Method of Measurement Decommission Existing Septic Tanks and Biocycle Units shall be paid for each unit decommissioned (EA). Payment for Decommission Existing Septic Tanks and Biocycle Units includes all labor, materials, and incidentals for removing wastewater, removal and disposal of the septic tanks and biocycle units, backfill and compaction, and seeding the fill surface limits. 516.4 Basis of Payment Payment shall be made under the following unit:

ITEM DESCRIPTION UNIT 516 Decommission Existing Septic Tanks and Biocycle Unit EA SP-14: New Section 517 – Furnish and Install 16” HDPE SDR 11 Casing 517.1 General The work under this section consists of providing all operations pertaining to the furnishing and installation of 16” high density polyethylene casing around ductile iron pipe, where shown on the plans. 517.2 Construction HDPE pipe material for casing shall be dimensioned for iron pipe sizing (IPS) and meet the maximum standard dimension ratio SDR of 11 517.3 Method of Measurement Furnish and Install 16” HDPE SDR 11 Casing shall be measured by the lineal foot (LF) with the dimensions shown on the drawings and these specifications. Payment for Furnish and Install 16” HDPE SDR 11 Casing includes all labor, materials, and incidentals for placing the casing around ductile iron pipe. 517.4 Basis of Payment Payment shall be made under the following unit:

ITEM DESCRIPTION UNIT 517 Furnish and Install 16” HDPE SDR 11 Casing LF SP-15: NEW SECTION 518 – PRESSURE SEWER SERVICE CONNECTIONS 518.1 General The work under this section consists of providing all operations pertaining to the construction required for pressure sewer service connections. 518.2 Materials All pressure sanitary sewer service connections shall be constructed with ductile iron with “Tyton” joints except where a mechanical joint is used to attach the short body plug. All services with less than five feet (5’) of cover shall be insulated with sufficient two-inch (2”) DOW Styrofoam “HI” to provide an equivalent of five feet (5’) of soil cover. The insulation shall be two feet (2’) in width and shall be placed no closer than six inches (6”) above the pipe and no further than one foot (1’) above the pipe, centered. IFCO 725-P saddle or equal shall be secured with a double strap or a single stainless steel band of two and one-half inches (2-1/2”) inches or more in width. 518.3 Construction Excavation and backfill for sanitary sewer service connections shall be in accordance with HSCS Division 200, Standard Specifications for Earthwork, Section 207, Trench Excavation and Backfill, of these specifications. The service connections shall be bedded with non-frost susceptible material, with a fine granular texture containing no material larger than one and one-half inches (1-1/2"). The bedding shall be laid the full extent of ditch and up to the spring line of the service connect. Piping may be bedded with native soils if approved in advance by the Engineer. Saddles shall be placed over a hole sawed no larger than one-eighth inch (1/8”) larger than the inside diameter of the service line. The strap(s) shall be tightened in accordance with the manufacturer’s instructions and centered over the hole sawed in the pipe being tapped. The hole shall be made above the spring line of the main being tapped. Sanitary sewer service connections, shall be installed to the edge of right-of-way or the edge of the permanent easement of the lot being served and shall be permanently marked by

means of a two by four (2” x 4”) extending two feet (2’) above grade, painted white and stenciled with the word “Sewer” in white, two-inch (2”) high letters. As-built measurements shall be the station of the service connection at the main plus a minimum of two (2) ties to prominent features and when possible ties to property corners. An as-built elevation of the stub end invert is required. Minimum slopes for the 4” ductile iron pipe shall be 2.08%, (1/4” per foot) sloped down to the main 518.4 Method of Measurement Pressure Sewer Service Connections shall be measured as completed units in place. This item will include all materials, excavation, installation, compaction, and installation of Class “B” bedding. Imported backfill will be paid separately as a bid item or by letter of agreement. 518.5 Basis of Payment Payment shall not be made for any service which does not include the as-built stub end elevation and horizontal location as stipulated above. Payment shall be made under the following unit:

ITEM DESCRIPTION UNIT 518 Pressure Sewer Service Connection EA DIVISION 700 MISCELLANEOUS CONSTRUCTION SP-16: NEW SECTION 712 – FURNISH AND INSTALL E-ONE DH071 GRINDER PUMP 712.1 General This specification covers the installation of E-One Sewer System’s E-One DH071 grinder pump as detailed and specified in the plans and these special provisions. The contractor’s attention is directed to the following E-One System’s publications:

1. DH071/DR071 Drawings (Standard Details in PDF and Autocad format) 2. DH071/DR071 Installation Instructions (Manual in PDF format)

These publications are available at:

https://eone.com/sewer-systems/products/grinder-pump-systems/d/dh071 712.2 Construction The contractor shall install the E-One DH071 grinder pumps per the manufacturer’s instructions and the construction notes shown in the plans. The contractor shall locate all buried on-site utilities before any excavation work. Buried on-site utilities may include, gas, electric, telecommunications, boiler heat tubes between buildings, and sewer. 712.3 Method of Measurement Furnish and Install E-One DH071 Grinder Pump shall be paid for by each unit (EA). 712.4 Basis of Payment Payment for Furnish and Install E-One DH071 Grinder Pump includes all labor and incidentals for furnishing and installing the units, complete in place including all wiring and plumbing connections. Payment shall be made under the following unit:

ITEM DESCRIPTION UNIT 712 Furnish and Install E-One DH071 Grinder Pump EA